https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65492
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Target| |x86_64-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-03-20
Version|unknown |5.0
Ever confirmed|0 |1
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Part of it is if-conversion enabled at -O3 (-fno-tree-loop-if-convert), but
then -O2 is still ~20% faster.
Confirmed.
Not sure if really caused by intrinsics.
